Engine speed control



. INVENTOR,

flw fifussell.

Sept. 19, 1944. R R L 2,358,597

ENGINE SPEED CONTROL Filed May 8, 1943 2 Sheets-Sheet l /6 28 2'6 F'/V%JI E 24 /4 ATTORNEYS Sept. 19, 1944. R. RUSSELL 2,358,597

ENGINE SPEED CONTROL- Filed May 8, 1943 2 Sheets-Sheet 2.KolarzdLJEzassZZ,

IN V EN TOR.

Patented Sept. 19, 1944 D TA S PATENT OFFICE e V 1 ;":2,35s,5 97

i I" me e ren" come-'1. V onner. Russell, Cincinnati, 0 g. QApplication8,'1943 ;.Serial. No. 486,218 v I (cum 5.2

; s ion I pring1oLriat1n one end ;conn ec ted.with

My invention relates to automotive .vehicles and has among its objectsand'advantagesthe provision of an improved speed limitingdevice whichmay be easily set Iby the operator at any desired speed.

In the accompanying drawings:

Figure 1 is a fragmentary side elevational view of an engineillustrating my invention applied thereto.

Figure 2 is a face view of the speed dial and setting lever.

Figure 3 is a top view of the structure of Figure 2.

Figure 4 is a view illustrating the speed limiting position of thecontrol.

Figure 5'is a top view of the structure of Figure 4, and t Figure 6 is aview taken along the line 6-6 of Figure 1.

In the embodiment of the invention selected for illustration, I make useof a dial plate 10 which is fixedly attached to an externally threadedsleeve I2. Nuts [4 fixedly clamp the plate to the sleeve. This plate islocated close to the instrument panel l6 of the vehicle in view of theoperator thereof. A shaft I8 is rotatably but frictionally mounted inthe sleeve I2 and is provided with a lever or pointer 20 forcoactionwith the mileage scale 22 on the plate l0.

Nuts 24 are threaded on the sleeve l2 and fixedly secure the latter to abracket 26 attached to the flange 28 on the panel l6 through the mediumof a set screw 30.

A leVer 32 has one end clamped on the'shaft l8 as by a bolt 34 in Figure3. To the outer end of the lever 32 is fixedly attached a wire 36slidable in a flexible housing 38. One end of the housing is clamped at40 to one end of a bracket 42 fixedly related to the sleeve l2 by thenuts 24.

On the engine 44 of Figure 1 is mounted a bracket 46 to which theopposite end of the flexible housing 38 is fixedly secured. The wire 36extends beyond the bracket 46 and is provided with a stop 48. One end ofa rigid link 50 is pivotally connected with the usual throttle lever 52for actuating the throttle valve 54. A stop 56 is attached to thelink'58 by a set screw 58, which stop coacts with the stop 48 to limitthe distance mally engaged by the link 60 by reason of a ten- 7 h sl fll-3 i b her ;.end connected with the lever 60. l

i A tension spring "has one end connected with one end of the lever 64and its other fend attached, to a bracket 14 mounted on; the engine. Theusual; accelerator pedallli is connected with a rod 18 pivotallyconnected at 88 with the lever 82 in which or pointer 20 impartslongitudinal motion to the wire 36 for adjusting the stop 48 relativelyto the stop 56. With the stop 48 positioned in accordance with Figure 1,pressure on the pedal 16 pivots the lever 64 ina clockwise directionagainst the tension of the spring 12, and the link moves with the lever64 by-reason of the spring 10. However, when the link 50 has beenadvanced sufliciently far to bring the stop 56 into engagement with thestop 48, further pivotal movement of the link 68 is arrestednotwithstanding further pivotal movement of the lever 64. Thus the stop48 may be set at any desired speed in'accordance with the scale 22 tocontrol opening of the valve 54 beyond the set position of the pointer20.

Without further elaboration, the foregoing will so fully explain myinvention, that others may, by applying current knowledge, readily adaptthe same for use under various conditions of service.

I claim:

1. In an engine, the combination of a rotary throttle valve having anarm, a throttle Valve control comprising a foot operated pedal, aresiliently biased lever mounted for pivotal movement about a fixedaxis, means connecting said lever with said foot operated pedal, a firststop on said lever, a pivoted link normally engaging said first stop, aspring connecting said lever and said link to yieldingly hold the latterin engagement with said first stop, a rod connecting said link with saidarm, a flexible-housing, a wire slidable in' said housing and having oneend provided with a second stop, a third stop on said rod connecting thelink with said arm, a speed indicating scale, a pointer coacting withsaid.

scale, a rotatably mounted shaft supporting said pointer, and anoperating connection between said shaft and ,said wire to impartlongitudinal movement to' the wire through rotation of said pointer foradjusting said second stop relatively to said third stop, said firststop being so arranged as to cause said link to move with said leveruntil said third stop is brought into engagement with said second stopbut permitting further pivotal movement of the link.

2. The combination with a throttle valve hav: ing an arm fixed theretoand a pedal for actuating said valve, of a lever mounted to pivot abouta fixed horizontal axisand having a projection extending "laterallytherefrom below the pivot axis, a link connecting the lower end of saidlever with the pedal, a spring connecting with a;

the lever to yieldingly hold the same in its re tracted throttle closingposition, an operating arm mounted to pivot about said axis in a position parallel with the lever, a springconnecting,

the lower end of the operating arm' with the lever to resiliently holdthe armagainst the projection" 3. The combination with a throttle valvehaving an arm fixed thereto and a pedal for actuating said valve, of alever mounted to pivot about a fixed horizontal axis and having aprojection extending laterally therefrom below the pivot axis, a linkconnecting the lower end of said lever with the pedal, a springconnecting with the lever to yieldingly hold the same in its retractedthrottle closing position, an operating arm mounte'dto pivot about saidaxis in a position parallel with the lever, a spring connecting thelower end of the operating arm with the lever to resiliently hold thearm against the projection on the lever, an operating link connectingthe lower end of said operating arm with the throttle arm toopen thethrottle upon forward movement of the operating arm,'an abutmentadjustably secured on the operating link, a stop adjustably mounted inthe path of movement of said abutment, and means controlled from aposition remoteifromithe'stop for adjusting the position of "the Flatterto :limit the opening movement of the throttle.

' ROLAND L. RUSSELL.

